The RVB260 is Ronco's B-260 L.D. - an 80 gallon light-duty fresh water molding, and one of two ways the maker cuts that capacity. Where its sibling molding takes one footprint, this one takes another, and which one you buy is decided by the shape of your bay, not by preference: at this size the tank must fit the compartment like a hand in a glove, because there is no room left over to shim.
The material is translucent natural polyethylene with FDA approval for potable water. Eighty gallons behind a see-through wall means your water gauge is a glance at the tank - no sender, no wiring, no failure mode. Fittings are installed by Ronco per order, spin-welded or threaded at your marked locations; on a big molding the port layout deserves real thought, so print the drawing below, walk it against the coach's plumbing runs, and set the positions in the fitting planner on this page.
It ships at 108 lb, with wall sections sized for a supported RV bay rather than open-water abuse - light duty in Ronco's precise sense of the term. Molded in Tustin, California; the shop has run since 1974.
Bracket the size in our RV water tank category - the RV64W sits one step up - or see the whole light-duty book on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.